Product Overview
The RFAII-S is a portable instrument to periodically collect and analyze flux data from any flux probe in real time, providing the user with data on rotor winding shorted turns.
Flux monitoring identifies shorted rotor turns through the measurement of the local magnetic field emanated from each rotor pole to identify:
- Shorted turns on a rotor pole
- Variation of pole’s physical position
- Out of round rotor shape
- Changes in the air gap between rotor and stator
Product Overview
Hydro Generator
Motor
Turbine Generator
Assists with the Following Type of Monitoring
Rotor Flux Monitoring (Synchronous Machines)
Product Details
Features
Data Acquisition
- Ideally used with permanently installed Iris Power Total Flux Probe (TFProbe) or Folding Flux Probe (FFProbe)
- Inputs for shaft sync sensor (Keyphasor) for pole determination when shorts are detected.
- Custom built, ultra-high resolution digital data acquisition module, including on-board switchable attenuation for maximum resolution measurements using virtually any flux probe
- High speed acquisition capability creates a table of results covering each pole and each load point
Data Analysis
The RFAII and RotorFluxPro software provides instant analysis to indicate the presence and location any rotor poles with shorted turns .
Analyzing the voltage waveforms in real time, comparing average and discrete flux readings, and trending readings to identify anomalies in the flux due to shorted turns.
Communication
- Rugged portable instrument connects to a control computer using USB and Ethernet interfaces
Options
- Five different voltage rated EMCs are available – 6.9 kV, 16 kV, 25 kV, 28 kV and 35 kV
- EMC kits with installation material according to IEEE 323-1983 for nuclear power generating stations are available
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Learning Center
This Resource Library is designed to provide current, relevant resources that provide technical knowledge and practical solutions for owners and operators of rotating machines. We encourage you to use the search feature and filters to locate specific resources of interest.
RESOURCE LIBRARY
Articles, Technical Papers, & Case Studies
Stator End-Winding Vibration in Two-Pole Machines – Avoiding Generator Failure
IN THE PAST 15 YEARS, INSURANCE INDUSTRY DATA HAVE indicated that stator end-winding vibration has become the most important ...
COURSES & TRAINING
Hands-on, practical experience
EL CID Training | Electromagnetic Core Imperfection Detection – May 6-8, 2025 – Iris Power, Toronto, Canada
Reasons to Take The Course Mechanical, electrical and environmental stresses can cause a breakdown in the inter-laminar insulation on Stator Core…
IRMC 2025
June 23-26, 2025 - Nashville, TN